Steam cut-off.



C. G. ALENIUS.

STEAM CUT-OFF.

APPLICATION FILED JAN.2, 1914.

1,152,589. Patentedsept. 7, 1915.

3 SHEETS-SHEET I.

Q l o a 3 h ifI 26 1% 15 f H101 16 I E 20 19 15 25 o 1 21 18 12 COLUMBIA PLANOORAPH co., WASHINGTON. D. c.

C. G. ALENIUS.

STEAM CUT-OFF.

APPLICATION FILED 1Au.2,1914,

3 SHEE TS-rSHEET 2.

AWwM 1 coLuMmA PLANDURAPH C0..wAsHlNflToN. D. c.

Patented Sept. 7, 1915.

C. G. ALENIUS.

STEAM CUT-OFF.

APPLICATION FILED JAN.?, 1914.

1,152,590 PatentedSept. 7, 1915.

3 SHEETS-SHEET 3- oars.

CARL GUSTAV ALENIUS, 0F MEADOWLANDS, V[I1\l'J' .l'IESO'lA.

STEAM our-011T.

To all whom it may concern:

Be it known that I, CARL G. ALnNIUs, a citizen of the United States, residing at Meadowlands, in the county of St. Louis and State of Minnesota, have inventedcertain new and useful Improvements in 'Steam Cut-Offs, of which the following is a specification.

This invention relates to improvements in steam cut-offs'and its object-is to produce such a device associated with a steam feed pipe and disposedbetween the steam boiler and the engine and adapted primarily for use in large steam plants wherea plurality of machines are drivenfrom a common belt shaft'and where it may be desirable to 'cut off the supply of steam to the'engine in an instant, as in the case of'acciclentffrom a point remote from the same. To this end I provide a plurality of hand valves, preferably one adjacent each machine, which valves are associated with alive steam pipe that is connected to the feed pipe and through the medium of any one of said valves steam power may be used to operate my improved cut-off to instantly cut-off the supply of steam to theengine, thereby abruptly bringing all of the machinery to a standstill. Many needless accidents of a serious nature may, through the employment of mechanism of this kind, be avoided that in many of the large steam plants.

With the foregoing and other objects in view the invention consists in the combina tion and arrangement of parts to be hereinafter fully described in the following specification, pointed out in the claims and illustrated in the accompanying drawings which form a part of said specification and in which I I v Figure 1 is a side elevation of my cut-off applied to a steam feed pipe. Fig. 2 is a plan of the same. Fig. 3 is an end elevation, taken on line 33 of Fig. 1. Fig. 4 is a section taken on line 4+4 of Fig. 2. Fig. 5 is a section taken on line 55 of Fig. 2. Fig. 6 is a section taken on line 66 of Fig. 1. Fig. 7 is a cross section on line 77 of Fig. 4. Fig. 8 is a plan View of the interior of a steam plant showing the application of my improved cut-off. Fig. 9 is an enlarged sectional detail of the direct cut-off actuating mechanism. Fig. 10 is a section through a portion of Fig. 9.

Like reference characters indicate cor- Specification of Letters Patent.

a steam feed pipe supplyingsteam to the lat ter from the former. 4, 4, 4 are machines of any kind operated by belts 5 receiving power fromthe' common power "shaft '6 which is belt-connected as at 7 to the engine 2. With thesteam feed pipe 3 I associate a steam chest 8 which is provided with a pair of sliding plates 9, 10, each of which is formed witha central aperturell andsaid plates are connected to and operated,respectively, by plungers 12, 13, which extend through the head of the steam chest and carry, respectively, links 14, 15 which are connected toeach other by thelever 16 fulcrumed upon a standard 17 secured to the head ofthe chest.

Patented Sept. '7, 1915. Application filed January 2, 1914. Serial No. 810,066. 1 l i i parts throughout the several One end of the link 15 is. also engaged by a link18, slidably supported in a standardl9 which is connected to a link 20connected to an angular lever 2l,'supported by a standard 21, which is connected to a link 23 which is connected to a link 24 that is connected to a lever 25 ful-.

head29; said cylinder being carried by the hanger 3O u d-to the frame 31; i

crumed in 'astandard 26 and said lever is connected to the'piston rod 27 that extends -1nto the cyllnder 2 8 and terminates in the Extending into the cylinder 28 is the steam pipe 32 Whichis provided with' the valve 33 and also the steam pipe 34 which is a branch of the pipe 32 m is provided with the valve 35. The steam pipe 32 leads from the cylinder 28, to an emergency steam pipe 36'which is provided at either side of said pipe 32 with the'check valves 37, 38 and said pipe 36. extends to the several machines i that are manned by workmen a'ndthe last" mentioned pipe is further provided adjacent each machine 4 with a hand valve 37 said pipe being suitably supported at a convenient height above the floor by suitable posts or supports 38*. 39 is a steam pipe that extends from the steam feed pipe 3 to the pipe 36'and communicates with the same between any two of the hand valves 37 which valves are normally closed to retain the live steam in the supply pipe 39 and only in the portion of'the pipe 36 between the valves 37 Operation: Normally the steam from the boiler 1 passes through the feed pipe 3 and through the steam chest 8, the ports of the i plates 9,10 being alined with each other and with the pipe 3, to the engine which runs themachinery. Steam, from the pipe 3' also passes through the pipe 39 tothe emergency pipe 36' betweenthehand valves 37 37% The auxiliary emergency pipe 32 is nor-- mally Without steam,-its' valve 33 is open,

" the branch'piple 34 is also without steam and its valve 35is'cl0sed and the head 29 is at the end offits in-stroke'in the cylinder 28. The engine-"2 'andma chinejs' l are runnlng normally and should an accident to the running gear-occuroran accidentioccur at any *one' of the machinesgt'the entire plant is shut down instantly from the machine involved in the? accident in. the following "manner I The hand valve nearest the machine involved in accident is ,openedfpermitting' steam to s' i circ late through thepipe 36'. beyond that valve and through on f theficheck valves 37 or 38 and into'theauxili'ary emergency.

.' pipe32from which it 'entersthe cylinder 28 and depresses the*cylinder head-29, thus,

through the chain. of connections previously described, causing theplungers 12, 13 to assume the position shown dotted" inFig. l

and throwing the apertured' plates 9, 10 out of register with each'other and out of registerfwith' the steam feedpipe 3 cutting ofi the supply ofsteam to the engine and instantly stopping the: machinery. To again start the machinery the valve of branch pipe' 3t opened and the Valve33 of the pipe 32 is closed, the, hand'valve 37* still remaining open, thus causing the steam to' force the pistonhead 29ba ck-t0 normal povalv'e- 34 closed. The plates -9 and' lO will feed pipe3 'and; the steam from said pipe will go to the engine in a normal manner.

7 "What. is claimed is:'

1.,The combination with a steam feed pipe provided-with a'steam chest, of sliding aperturedplates disposed withinfsaidchest, said apertures being normally in alinement with each other and'wlth saidv feed pipe, plate fumes "ofth is patent 'may be obtained. for

shifting mechanism associated with the head of said steam chest and with said sliding plates, an auxiliary emergency steam pipe, a branch steam pipe, steam controlled means Y connected with said auxiliary emergency steam plpe and said branch steam pipe, and

controlling said plate shifting mechanism, an endless emergency steam pipe communieating with said auxiliary emergency steam pipe and provided with check valves upon .the respective sides of the point of communication of the two pipes, hand valves associated with said emergency steam pipe and r a supply pipe connecting the aforesaid feed pipe and a portion of the said emergency steam pipe between two of its hand valves.

2. The combination with a steam feed pipe provided with a steamchest, of sliding apertured plates disposed within said chest, said apertures being normally in alinement with each other and with said feed pipe, plate shifting mechanism associated with the head of said steam chest and with said sliding plates, a steam cylinder provided with a piston associated with said plate shifting mechanism, an auxiliary emergency steam pipe associatedwith said cylinder for supplying steam to move the piston thereof in one direction, means associated with said cylinder and auxiliary emergency steam pipe for supplying steam'to move the piston thereof in the opposite direction, an endless emergency steam pipe communicating with said auxiliary emergency steam pipe and provided'with check valves upon the respective sides of the point of communication of the two pipes,hand valves associated with said emergency steam pipe and a supply pipe connecting the aforesaid feed pipe and a portion of the said emergency steam pipe between two of its hand valves.

In testimony that I claim the foregoing as my own I have hereto. afliXed my signature in the presence of the subscribing witnesses.

' CARL GUSTAV ALENIUS.

WVitnesses:

' CHAS. F. PALMER, HENRY Olinmzcnn,

" AXEL HANSEN.

five cents each, by addressing the Commissioner of Patents. Washington, D. G. 

